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We infected various nonflagellated mutants of Escherichia coli with fla-transducing phages and followed the kinetics of the appearance of motility. Our analysis revealed two distinct classes of region III fla genes. Class II fla genes (hag, flaD) functioned 15 min later than class I fla genes (flaN, flaB, flaC, flaO, flaA, flbD, flaQ, flaP) in flagellar morphogenesis. We suggest that the two classes of fla genes are involved in two different stages, initiation (class I) and completion (class II), of flagellar formation. 相似文献
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Cascade regulation of Caulobacter flagellar and chemotaxis genes 总被引:28,自引:0,他引:28
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